In this month's column we'll explore being "multi-homed" - connected to two or more "upstream" Internet providers. We'll look at why ISPs want to (most argue should) multi-home, and at some of the advantages and disadvantages.
We'll also talk about the Border Gateway Protocol Version 4 (BGP4), the magic protocol that runs the Internet. The myth goes that you must run BGP4 to "multi-home," but this isn't quite true. We'll be talking quite a bit about BGP4 in future columns - for now, we'll cover just the basic concepts.
Before we can get to the meat of the discussion, though, we have to go over some basic topics.
Read more here.
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